Charles Elliott Sigal - 08 May 2025 Form 4 Insider Report for ALNYLAM PHARMACEUTICALS, INC. (ALNY)

Role
Director
Signature
By: Brett Budzinski, Attorney-in-Fact For: Charles Elliott Sigal
Issuer symbol
ALNY
Transactions as of
08 May 2025
Net transactions value
$0
Form type
4
Filing time
12 May 2025, 16:04:14 UTC
Previous filing
03 Jun 2024
Next filing
02 Jun 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Sigal Charles Elliott Director 675 WEST KENDALL STREET, HENRI A. TERMEER SQUARE, CAMBRIDGE By: Brett Budzinski, Attorney-in-Fact For: Charles Elliott Sigal 12 May 2025 0001661908

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ALNY Common Stock Award $0 +775 $0.000000 775 08 May 2025 Direct F1
holding ALNY Common Stock 2,000 08 May 2025 by Trust F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction ALNY Stock Option (right to buy) Award $0 +1,558 $0.000000 1,558 08 May 2025 Common Stock 1,558 $258.35 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These shares are represented by restricted stock units (RSUs) granted under the Amended and Restated 2018 Stock Incentive Plan. Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest in full upon the earlier of the first anniversary of the grant date and the date of any earlier retirement or resignation of the Reporting Person, provided such date of retirement or resignation occurs no more than 90 days prior to the first anniversary of the grant date.
F2 Shares held by Sigal Family Investments, LLC, of which the reporting person is Managing Member.
F3 The stock option vests in full upon the earlier of the first anniversary of the grant date and the date of any earlier retirement or resignation of the Reporting Person, provided such date of retirement or resignation occurs no more than 90 days prior to the first anniversary of the grant date.